Chased by a vengeful criminal, the feds and a gang of otherworldly soldiers, a recently released ex-con, and his adopted teenage brother are forced to go on the run with a weapon of mysterious origin as their only protection.

Ballerina Dominika Egorova is recruited to 'Sparrow School,' a Russian intelligence service where she is forced to use her body as a weapon. Her first mission, targeting a C.I.A. agent, threatens to unravel the security of both nations.